atakacs
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This
diagram from the same web site you linked to has the same illustration but also has some words with it which seem to make a lot of sense out of what we have been hearing about the ablation pattern and the sequence in which the sensors failed.
--- Quote from words on the diagram ----
... Wiring diagram shown is for the left wing. Scanners attached to the orange lines failed first, and six sensors on the main gear failed last.
----- End of quote -----------------------------
The orange wires take a 90º bend directly behind the leading edge of the wing where the sweep-back angle changes, shown in the NASA photo below of Columbia on the pad before launch of STS-107.
Of course, we should also remember the NASA warnings against jumping to conclusions which may turn out later to be wrong.
